I really appreciate your response. This does a lot to assure my worriness. I will do the syphillis test as well. Thanks
Welcome to the HIV forum.
Your symptoms really don't even hint at HIV. Allergic rashes usually itch and the skin rash of ARS never does. Any drug can cause an allergic skin rash, but the sulfa drugs -- of which Bactrim is one -- do so more often than any other. And a health care provider ahs examined and reassured you. The other symptoms don't sound any more like HIV/ARS than the rash does. Finally, assuming you are in the US or other industrialized country, the chance any of your sex partners had HIV is very low (probably less than 1 in 1,000).
That said, it's pretty dumb for anyone to have unprotected sex in one-night stands with bar pick-ups. Even if the HIV risk is statistically extremely low, it isn't zero; and the chance of other STDs is very high. But in this case, even STDs aren't likely to be an issue, since Bactrim would cure or prevent chlamydia, gonorrhea, and nongonococcal urethritis (NGU), the three most likely STDs in this situation. But not syphilis, so if not done when you had the HIV test, you might call the provider and see if they can run a syphilis test on the same specimen.
In any case, you can expect the HIV test to be negative. But I do hope you'll start getting into a safer sexual lifestyle. Buy some condoms and keep them handy.
Regards-- HHH, MD